The United States is in the process of reviewing the intelligence that led it to conclude that Iraq had weapons of mass destruction, and which formed the public justification for war. A great deal of the discussion has concerned the sources of this intelligence. Some have pointed out that the main channel for intelligence on the subject involved sources developed through the Iraqi National Congress, a group opposed to Saddam Hussein, whose leader was Ahmad Chalabi — also a key official in the U.S.-organized Iraqi Governing Council. Chalabi, like any anti-Hussein leader, clearly would have had a vested interest in providing the United States with information that would lead it to invade Iraq and open the door for a new regime — particularly a regime in which Shia would play a leading role.